Adsense Ad placement

Im having problems trying to place an adsense ad on my site. I applied for an adsnense account and it was prov approved and I had to place an ad on my site. But when I put the code in,the ad is underneath the writing. It is in tiny letters but I assume thats because it is a test ad. Is this the way it looks till approved? Or am I doing something wrong? I dont see what I could be doing as I copied and pasted the ad code into the html section of my blog. I tried adjusting the html code to move the writing down but im out of my depth and that just made it worse.

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